Results 31 to 40 of about 791,529 (299)

The Atmosphere-Ocean General Circulation Model EMAC-MPIOM [PDF]

Geoscientific Model Development, 2011
The ECHAM/MESSy Atmospheric Chemistry (EMAC) model is coupled to the ocean general circulation model MPIOM using the Modular Earth Submodel System (MESSy) interface.
A. Pozzer, P. Jöckel, B. Kern, H. Haak
doaj   +1 more source

Improving the performance scalability of the community atmosphere model [PDF]

The International Journal of High Performance Computing Applications, 2011
The Community Atmosphere Model (CAM), which serves as the atmosphere component of the Community Climate System Model (CCSM), is the most computationally expensive CCSM component in typical configurations. On current and next-generation leadership class computing systems, the performance of CAM is tied to its parallel scalability. Improving performance
Mirin, A. A., Worley, P. H.
openaire   +1 more source

An extensible perturbed parameter ensemble for the Community Atmosphere Model version 6 [PDF]

Geoscientific Model Development
This paper documents the methodology and preliminary results from a perturbed parameter ensemble (PPE) technique, where multiple parameters are varied simultaneously and the parameter values are determined with Latin hypercube sampling. This is done with
T. Eidhammer, A. Gettelman, A. Gettelman, K. Thayer-Calder, D. Watson-Parris, G. Elsaesser, G. Elsaesser, H. Morrison, M. van Lier-Walqui, M. van Lier-Walqui, C. Song, D. McCoy   +11 more
doaj   +1 more source

Net ecosystem productivity and its uncertainty in a diverse boreal peatland [PDF]

, 1999
Net ecosystem exchange (NEE) of CO2 was measured in four peatlands along plant community, hydrologic, and water chemistry gradients from bog to rich fen in a diverse peatland complex near Thompson, Manitoba, as part of the Boreal Ecosystem-Atmosphere ...
Bubier, Jill L., Crill, P, Frolking, Steve, Linder, Ernst   +3 more
core   +2 more sources

Assessing the Uncertainty of Tropical Cyclone Simulations in NCAR's Community Atmosphere Model

Journal of Advances in Modeling Earth Systems, 2011
The paper explores the impact of the initial-data, parameter and structural model uncertainty on the simulation of a tropical cyclone-like vortex in the National Center for Atmospheric Research's (NCAR) Community Atmosphere Model (CAM).
Kevin A Reed, Christiane Jablonowski
doaj   +1 more source

Impact of surface coupling grids on tropical cyclone extremes in high-resolution atmospheric simulations [PDF]

Geoscientific Model Development, 2016
This paper discusses the sensitivity of tropical cyclone climatology to surface coupling strategy in high-resolution configurations of the Community Earth System Model. Using two supported model setups, we demonstrate that the choice of grid on which the
C. M. Zarzycki, K. A. Reed, J. T. Bacmeister, A. P. Craig, S. C. Bates, N. A. Rosenbloom   +5 more
doaj   +1 more source

Effects of Explicit Convection on Land Surface Air Temperature and Land‐Atmosphere Coupling in the Thermal Feedback Pathway

Journal of Advances in Modeling Earth Systems, 2018
Simulating and understanding continental temperature extremes is a critical issue in Earth System Modeling. Conventional general circulation models are impaired by imperfect cloud and boundary layer parameterization schemes with implications for ...
J. Sun, M. S. Pritchard
doaj   +1 more source

The Chemistry Mechanism in the Community Earth System Model Version 2 (CESM2)

Journal of Advances in Modeling Earth Systems, 2020
The Community Earth System Model version 2 (CESM2) includes a detailed representation of chemistry throughout the atmosphere in the Community Atmosphere Model with chemistry and Whole Atmosphere Community Climate Model configurations.
Louisa K. Emmons, Rebecca H. Schwantes, John J. Orlando, Geoff Tyndall, Douglas Kinnison, Jean‐François Lamarque, Daniel Marsh, Michael J. Mills, Simone Tilmes, Charles Bardeen, Rebecca R. Buchholz, Andrew Conley, Andrew Gettelman, Rolando Garcia, Isobel Simpson, Donald R. Blake, Simone Meinardi, Gabrielle Pétron   +17 more
doaj   +1 more source

A sensitivity study of radiative fluxes at the top of atmosphere to cloud-microphysics and aerosol parameters in the community atmosphere model CAM5 [PDF]

Atmospheric Chemistry and Physics, 2013
In this study, we investigated the sensitivity of net radiative fluxes (FNET) at the top of atmosphere (TOA) to 16 selected uncertain parameters mainly related to the cloud microphysics and aerosol schemes in the Community Atmosphere Model version 5 ...
C. Zhao, X. Liu, Y. Qian, J. Yoon, Z. Hou, G. Lin, S. McFarlane, H. Wang, B. Yang, P.-L. Ma, H. Yan, J. Bao   +11 more
doaj   +1 more source

Nitrate deposition to surface snow at Summit, Greenland, following the 9 November 2000 solar proton event [PDF]

, 2014
This study considers whether spikes in nitrate in snow sampled at Summit, Greenland, from August 2000 to August 2002 are related to solar proton events. After identifying tropospheric sources of nitrate on the basis of correlations with sulfate, ammonium,
Dibb, Jack E., Duderstadt, Katherine A., Jackman, Charles H., Mills, Michael J., Randall, Cora E., Schwadron, Nathan A., Solomon, Stanley C., Spence, Harlan E.   +7 more
core   +2 more sources